Medical porous titanium-containing material/surface molecular sieve coating material and preparation method thereof
A technology of coating material and molecular sieve, which is applied in the field of surface modification of biomedical materials, can solve the problems of weak binding force between coating and carrier, coating corrosion resistance, poor biological activity, etc., and achieve good osteoblast compatibility Sex, improve anti-corrosion performance, promote proliferation and differentiation
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Embodiment 1
[0023]The foamed titanium carbide ceramic TiC / Ti composite material used in this example has an open porous structure, and its structural parameters are as follows: the mesh size of the three-dimensional interconnected network structure is 1.5 mm, and the pore volume fraction is 80%.
[0024] Preparation method of ZSM-5 type zeolite molecular sieve coating material on the surface of foamed titanium carbide ceramics:
[0025] First, a zeolite precursor sol is prepared. Mix ethyl orthosilicate, tetrapropylammonium hydroxide, and deionized water in a molar ratio of 1:0.32:32. After the ethyl orthosilicate was completely hydrolyzed, hydrothermal synthesis was carried out at 110° C. for 4 hours in a reaction kettle. Immerse the foamed titanium carbide carrier in the zeolite precursor sol prepared by the above method, shake off the excess sol with a centrifuge, and dry at room temperature for 12 hours. The thickness of the zeolite precursor sol is 0.5-1 micron. A secondary growth ...
Embodiment 2
[0030] In the present embodiment, the preparation process of the foamed titanium alloy (Ti-6Al-V) is as follows: the foamed plastic is cut into a desired shape and soaked in a slurry containing Ti-6Al-4V alloy powder, and the soaked foamed plastic is dried to make After the solvent is volatilized, the organic sponge is decomposed or pyrolyzed by heating, and the remaining Ti-6Al-4V alloy powder is sintered by further heating, and the foamed Ti-6Al-4V alloy material with interconnected pores is obtained after cooling. Foamed titanium alloy (Ti-6Al-V) has an open porous structure with a pore diameter of 1.0 mm and a pore volume fraction of 70%.
[0031] The preparation method of ZSM-5 type zeolite molecular sieve coating material on the surface of foamed titanium alloy (Ti-6Al-V):
[0032] First, a zeolite seed colloid was grown in situ. Mix ethyl orthosilicate, tetrapropylammonium hydroxide, and deionized water in a molar ratio of 1:0.25:29. After the tetraethyl orthosilicate...
Embodiment 3
[0036] The porous titanium-containing intermetallic compound (TiB) used in this example has an open porous structure, and its structural parameters are as follows: the mesh size of the three-dimensional interconnected network structure is 1.0 mm, and the pore volume fraction is 70%.
[0037] Preparation method of porous TiB-containing surface β-type zeolite molecular sieve coating material:
[0038] Firstly, the surface of the porous TiB material is modified by cationic polymer, and the specific process is to immerse the porous TiB material in 50 wt % cetyltrimethylammonium bromide aqueous solution for 2 hours. Mix ethyl orthosilicate, sodium metaaluminate, tetraethylammonium hydroxide, and deionized water in a molar ratio of 1:0.5:0.5:20. After the ethyl orthosilicate is completely hydrolyzed, the surface-modified The porous TiB material and the above solution were placed in a reaction kettle, and hydrothermally synthesized at 140° C. for 48 hours to prepare a β ultrafine mol...
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